EUCHNER LCA 4, Руководство по эксплуатации, Страница: 86 / 96

Operating Instructions
Light Grids/ Light Curtains LCA 4
86
(translation of the original operating instructions) 2504709-01-06/17
10. Diagnostics/troubleshooting
The chapter LED displays provides information on different system states. These can be identified and rectified using the
table below.
Table 16: Transmitter fault diagnostics
Meaning
Three-color LED
(Red/Green/Orange)
Flashing sequence Solution
Incorrect connection of pins 2 and 4 Red 2 pulses in succession
Ì
Check the connections on pin 2 and 4.
Internal fault Red 3/4 pulses in succession
Ì
Contact the manufacturer.
Master and slave not compatible Red 5 pulses in succession
Ì
Check compatibility of the models.
Waiting time communication master/
slave 1)
Orange Flashing
Ì
Check the state of the master.
Ì
If it is in the error state, check the error.
Ì
If the error persists, send the device to the manufacturer
for repair.
Loss of communication master/slave
2)
Orange 2 pulses in succession
Ì
Check master/slave connections.
Ì
Reset the system.
Ì
If the error persists, send master and slave to the manufac-
turer for repair.
Table 17: Normal operation of the receiver
Meaning
LED1
(RED/GREEN)
LED2
(YELLOW/BLUE)
Flashing se-
quence
Solution
MASTER: Light barrier clear /
SLAVE: Light barrier/s occupied
Red Yellow flashing Waiting for feedback K1_K2 OK
BREAK_K condition 3) Yellow flashing Yellow flashing Waiting for feedback K1_K2 OK
BREAK_K condition with weak signal
reception
3)
OFF Blue (flashing)
Blue alternating Waiting for feedback K1_K2 OK
Yellow Blue
Table 18: Receiver fault diagnostics
Meaning
LED1
(RED/GREEN)
LED2
(YELLOW/BLUE)
Flashing se-
quence
Solution
Configuration incorrect Red OFF
2 pulses in
succession
Check connections.
Interference due to transmitter Red OFF
4 pulses in
succession
Find the interfering transmitter and take one of the following
actions:
Ì
Reduce the range on the interfering transmitter from High
to Low
Ì
Swap the position of the transmitter and receiver
Ì
Move the interfering transmitter to prevent it affecting the
receiver
Ì
Shield the beams coming from the interfering transmitter
using matt guards
Error on safety outputs Red OFF
5 pulses in
succession
Check connections.
Ì
If the error persists, send to EUCHNER for repair.
Internal fault Red OFF
6/7 pulses in
succession
Contact the manufacturer.
Incorrect connections master/slave
4)
Red OFF
8 pulses in
succession
Check master/slave connections.
Otherwise: Contact the manufacturer.
1) Flashing sequence only on slave light curtain 2) Flashing sequence only on master and slave light curtain
3) LCA clear – outputs deactivated 4) Flashing sequence only on master and slave 2 light curtain
If the cause of the error is unclear, under all circumstances undertake a restart. In this way electromagnetic interference
can be excluded.
If there are malfunctions:
Ì The good condition and correctness of the electrical connections must be checked.
Ì It must be checked whether the supply voltage matches the voltage stated in the technical data.
Ì It must be checked whether the transmitter and receiver are correctly aligned and the surfaces on the front are clean.
Ì It is also recommended to keep the supply for the device away from other high-power devices (electric motors, invert-
ers, frequency converters) or other sources of interference.